Skip to content

Instantly share code, notes, and snippets.

@CMCDragonkai
CMCDragonkai / linux_kernel_modules_nixos.md
Last active December 16, 2024 22:07
Linux Kernel Modules for NixOS #linux #nixos

Linux Kernel Modules for NixOS

You can find what kernel modules are loaded using lsmod.

However some kernel modules are required at stage 1 boot. Basically preloaded in the initial ram disk before switching to the root filesystem. These kernel modules are mostly needed to deal with peripherals, storage devices, filesystems and network devices. You may need to be wary of these required modules:

  • sd_mod - SCSI, SATA, and PATA (IDE) devices
@TRPB
TRPB / arch-macbook2018.md
Last active May 5, 2025 02:42
Guide: Running Arch on a 2018 MacBook Pro

Hardware Prerequisites

You'll need at least the following hardware:

  • At least 3 USB-A to USB-C converters or hub with enough ports for at least 3 USB devices if all your devices are USB-A then:
  • A USB drive
  • A USB keyboard
  • USB to Ethernet adapter, compatible USB dongle or USB tethering on a phone
@mikowl
mikowl / nord-vimium.css
Created July 5, 2019 19:07
Nord Vimium Theme
/* Nord Vomnibar CSS */
/* Installation: Open Vimium Options -> Click "Show Advanced Options" and paste this into the CSS for Vimium UI text area. */
#vomnibar ol, #vomnibar ul {
list-style: none;
display: none;
}
#vomnibar {
background: rgba(46, 52, 68, 0.9);
@castwide
castwide / rails.rb
Last active October 24, 2024 16:26
Enhance Rails Intellisense in Solargraph
# The following comments fill some of the gaps in Solargraph's understanding of
# Rails apps. Since they're all in YARD, they get mapped in Solargraph but
# ignored at runtime.
#
# You can put this file anywhere in the project, as long as it gets included in
# the workspace maps. It's recommended that you keep it in a standalone file
# instead of pasting it into an existing one.
#
# @!parse
# class ActionController::Base
@pamolloy
pamolloy / README.md
Last active October 16, 2024 20:40
Ubiquiti USG configuration for Wireguard

Download the latest ugw3 package from https://github.com/Lochnair/vyatta-wireguard/releases and install it on your USG using dpkg -i wireguard-ugw3-<version>.deb.

cd /config/auth
umask 077
mkdir wireguard
cd wireguard
wg genkey > wg_private.key
wg pubkey < wg_private.key > wg_public.key
@mrkgnao
mrkgnao / ghostscript-pdf-crop.sh
Created October 8, 2018 16:32
Crop pdfs with GhostScript
#!/usr/bin/env bash
set -euo pipefail
origdir=$(pwd)
tmpdir=$(mktemp -d)
echo "tmpdir: $tmpdir"
read -r width height < <(pdfinfo $1 | grep "Page size:" | sed 's/[a-zA-Z: ]*\([0-9]\+\)[x ]*\([0-9]\+\).*/\1 \2/')
npages=$(pdfinfo $1 | grep "Pages:" | sed 's/Pages: \+\([0-9]\+\).*/\1/')
echo "page count: $npages"
echo "(width, height) = ($width, $height)"
<template lang='pug'>
div.drop-zone(:class='{dragging: isDragging }'
@dragover.prevent='dragover'
@dragenter.prevent='dragover'
@drop.prevent.stop='onDrop'
@dragleave.prevent='dragleave')
div(:class='{ hidden: uploadInProgress }' @click='openFileBrowser')
slot
i {{label}}
input(type='file' :multiple='multiple' ref='input' style='display: none')
@mohamadaliakbari
mohamadaliakbari / ubuntu-run-dhclient-on-startup.md
Last active July 31, 2024 08:46
Run dhclient on Startup in Ubuntu 18.04

dhclient is the Dynamic Host Configuration Protocol (DHCP) Client one would use to allow a client to connect to a DHCP server.

$ sudo nano /etc/rc.local

#!/bin/bash
dhclient
exit 0
# config/initializers/activestorage.rb
Rails.application.config.to_prepare do
# Provides the class-level DSL for declaring that an Active Record model has attached blobs.
ActiveStorage::Attached::Macros.module_eval do
def has_one_attached(name, dependent: :purge_later, acl: :private)
class_eval <<-CODE, __FILE__, __LINE__ + 1
def #{name}
@active_storage_attached_#{name} ||= ActiveStorage::Attached::One.new("#{name}", self, dependent: #{dependent == :purge_later ? ":purge_later" : "false"}, acl: "#{acl}")
end
@diffficult
diffficult / installing_virt_manager.md
Last active May 3, 2025 09:38
Easy instructions to get virt-manager qemuv/kvm running on Arch

Easy instructions to get QEMU/KVM and virt-manager up and running on Arch

  1. Make sure your cpu support kvm with below command:

     grep -E "(vmx|svm)" --color=always /proc/cpuinfo
    
  2. Make sure BIOS have enable “Virtualization Technology”.

  3. User access to /dev/kvm so add your account into kvm(78) group: